Facebook's final private market transaction has priced on SecondMarket at $43.50, a record for the private market exchange. That figure values the company at about $109 billion. At that level, Facebook's market cap would just fall short of Cisco Systems , which is the 8th largest company on the Nasdaq 100 and holds a 3.4 percent weighting in the index.In fact, Facebook would be bigger than each of the following Nasdaq 100 members: Amazon.com, Comcast, News Corp,eBayand Starbucks.